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MCQs

Total Questions : 2607 | Page 117 of 261 pages
Question 1161.


Two rigid plates are clamped by means of bolt and nut with an initial force F. After tightening, a separating force P (P < F) is applied to the lower plate, which in turn acts on the nut. The tension in the both after this is


  1.    F + P
  2.    F - P
  3.    P
  4.    F
 Discuss Question
Answer: Option A. -> F + P


Question 1162.
.A leaf spring in automobiles is used
  1.    to apply forces
  2.    to measure forces
  3.    to absorb shocks
  4.    to store strain energy
 Discuss Question
Answer: Option D. -> to store strain energy


Question 1163.
.When a metal or alloy is cold worked,
  1.    its hardness and strength increases
  2.    it is worked below recrystallisation temperature
  3.    Both (A) and (B)
  4.    None of these
 Discuss Question
Answer: Option C. -> Both (A) and (B)


Question 1164.

In a bolt, the plane of shear should be across the threaded portion of the shank.


  1.    Correct
  2.    Incorrect
 Discuss Question
Answer: Option B. -> Incorrect


Question 1165.
 
In cyclic loading, stress concentration is more serious in
  1.    brittle materials
  2.    ductile materials
  3.    brittle as well as ductile materials
  4.    elastic materials
 Discuss Question
Answer: Option B. -> ductile materials


Question 1166.
For a square key made of mild steel, the shear and crushing strength are related as
  1.    shear strength is equal to crushing strength
  2.    shear strength is greater than crushing strength
  3.    shear strength is less than crushing strength
  4.    none of the above
 Discuss Question
Answer: Option A. -> shear strength is equal to crushing strength


Question 1167.
 
For circumferential joint in boilers, the type of joint used is
  1.    butt joint with single cover plate
  2.    butt joint with double cover plate
  3.    lap joint with one ring overlapping the other
  4.    any one of the above
 Discuss Question
Answer: Option C. -> lap joint with one ring overlapping the other


Question 1168.

Wahl's stress factor __________ very rapidly as the spring index decreases.


  1.    increases
  2.    decreases
 Discuss Question
Answer: Option A. -> increases


Question 1169.

  A flange coupling is a type of rigid coupling.


  1.    Correct
  2.    Incorrect
 Discuss Question
Answer: Option A. -> Correct


Question 1170.

The shock resistance of steel is increased by adding


  1.    nickel
  2.    chromium
  3.    nickel and chromium
  4.    cobalt and molybedenum
 Discuss Question
Answer: Option C. -> nickel and chromium


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